Home / 5,090.78-7,639.01-2,750.74

Finding the Fourth Proportional to 5,090.78, 7,639.01 and 2,750.74

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Solution

The fourth proportional to 5,090.78, 7,639.01 and 2,750.74 is: 4,127.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,090.78 : 7,639.01 = 2,750.74 : x
  2. Step 2: Convert to fraction form
    5,090.78/7,639.01 = 2,750.74/x
  3. Step 3: Cross multiply
    5,090.78x = 7,639.01 × 2,750.74
  4. Step 4: Simplify right side
    5,090.78x = 21,012,930.37
  5. Step 5: Solve for x
    x = 21,012,930.37/5,090.78
  6. Step 6: Final answer
    x = 4,127.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.